class ActionDispatch::Flash::FlashHash

# Equivalent to flash.now[:notice] = "Good luck now!"
flash.now.notice = "Good luck now!"

# Equivalent to flash.now[:alert] = "Beware now!"
flash.now.alert = "Beware now!"

Also, brings two convenience accessors:

Entries set via now are accessed the same way as standard entries: flash['my-key'].

vanish when the current action is done.
When you need to pass an object to the current action, you use now, and your object will
When you need to pass an object to the next action, you use the standard flash assign ([]=).
This method enables you to use the flash as a central messaging system in your app.

flash.now[:message] = "Hello current action"

Sets a flash that will not be available to the next action, only to the current.

def now
  @now ||= FlashNow.new(self)
end